Disable "isolate" step on other compile-only trybots
Disable "isolate" step on other compile-only trybots

BUG=none

Review URL: https://codereview.chromium.org/805023002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293395 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build